Ancient pollen from White Sands National Park in New Mexico reveals how early humans may have witnessed dramatic climate change more than 20,000 years ago, as rising temperatures shrank a large lake and transformed conifer forests into oak woodlands and sagebrush.
Environmental advocacy groups are accusing U.S. Sen. Martin Heinrich of betrayal for co-sponsoring a bipartisan energy permitting reform bill they say weakens safeguards and undermines his record as a champion of renewable energy and environmental protection in New Mexico.
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